Sam Dorsey, Nikki Havey, Crystal Pereira, and Page Silva
Table A- A lesson on scientific Notation.
What is scientific Notation?
It is a way to express really big or really small numbers.
it allows us to compare numbers without losing track of all the zeros.
how to write Scientific notation. the base is a number with only one digit in front of the decimal. [example] 5.3
then times the base by a power of 10.
[example] 5.3 x 10^3
from standard form to scientific notation.
place the decimal point so that only a one non-zero number to the left of the decimal.
then count the number of spaces the decimal point "moved" from its original position. this becomes
the exponent of 10
[example] 5300 = 5.3 x 10^3
from scientific to standard
move the decimal point to the right for positive exponents of 10
move to the left for the negative exponents of 10
[example] 5.3 x 10^3 = 5300
[example2] 5.3 x 10^-3 = 0.0053
Table D
Dimensional Analysis
Purpose: Dimensional analysis is a way to analyze and solve problems using the units of the measurement.
Helpful Hint: Anything you measure in dimensional analysis will have some “unit of measure.” The measures could be miles, pounds, grams, or seconds.
Distance: Meters = M
Mass: Kilogram = Kg
Time: Seconds = S
Temperature: Kelvin = K
Amount of Substance: Mole = Mol
Celcius to Kelvin: Celcius + 273.15
Kelvin to Celcius: Kelvin - 213.15 ( I think it is Kelvin to Celcius: Kelvin - 273.15 .)( Mazda)
1 L= 1000 mL 1Kg= 1000 g 10mm= 1cm 1 deciLiter= 0.1 L
Table B
Multiplication And Division -- The number of significant figures in the result needs to be equal to the number of significant figures in the number with the fewest significant digits
Addition and Subtraction -- The number of places after the decimal point in the result needs to be equal to the smallest number of decimal places in the original measurements
Accuracy and Precision
Sig Fig Rules
- All non-zero digits are significant
523g = 3 sig figs
6,427,473 = 7 sig figs
- 0's in between #'s are significant
5042 = 4 sig figs
2,048,001 = 7 sig figs.
- 0's at the beginning of the #'s are NOT significant
0.0032 = 2 sig figs
0.000000372 = 3 sig figs.
- 0's at the end of some numbers are sometime significant. If there is a decimal point all 0's at the end of the #'s are significant.
0.00000420 = 3 sig figs.
2.000 = 1 sig fig.
- If there is NO decimal point 0's at the end are NOT significant.
70000 = 1 sig fig.
- 0's between the decimal point and the #'s are NOT significant
0.00000000000000067258 = 5 sig figs
Metric Units
1L=1000 mL 1Kg=1000 g 10mm=1 cm 1dL=0.1 L 16oz=1 lb 1oz= 28.35g 1in=2.54 cm 1 mile= 1.61 km 2000lbs= 1 ton 1cm3= 1mL 1 gallon= 4 quarts
1 kg = 2.2 lbs 1 L = 1.06 qts 1 ft = 12 in 1 mile = 2760 yds
Vocabulary:
1) Measurement - A quantity that has both a number and a unit 2) Scientific Notation - A given number written as a product of a coefficient and 10 raised to a power 3) Accuracy - Measure of how close a measurement comes to the actual or true value of whatever is measured 4) Precision - Measure of how close a series of measurements are to one another 5) Accepted Value - The correct value based on reliable references 6) Experimental Value - Value measured in a lab 7) Error - Difference between experimental value and accepted value 8) Percent Error - The absolute value of the error divided by the accepted value multiplied by 100% 9) Significant Figures - A measurement including all of the digits that are known plus the last digit that is estimated 10) International System of Units - A revised version of the metric system 11) Meter - SI basic unit of length 12) Liter - A non-SI unit of volume 13) Kilogram - SI unit of mass 14) Weight - A force that measures the pull on a given mass by gravity 15) Temperature - A measure of how cold/hot an object is 16) Celsius Scale - Sets the freezing point of water at 0 degree Celsius, and the boiling point of water at 100 degrees Celsius 17) Kelvin Scale - Sets the freezing point of water at 273.15 Kelvins, and the boiling point of water at 373.15 Kelvins 18) Absolute Zero - Equal to -273.15 degrees Celsius 19) Energy - Capacity to do work or to produce heat 20) Calorie - Quantity of heat that raises the temperature of 1 gram of pure water by 1 degree Celsius 21) Conversion Factor - A ratio of equivalent measurements
22) Dimensional Analysis - A way to analyze and solve problems using units, dimensions, or measurements
http://www.youtube.com/watch?v=bey8gCyXGw8
Mazda, Derek, Charles, Ryan
http://www.youtube.com/watch?v=IgSChhNnXkw
Sean, Kris, Michelle, Aaron,
Shane Looker, Jesus Arechiga, Alex Arellano
Jaipal K., Ashley B. Brittney N., and Kris
Magnesium Oxide Lab Video (could not upload video)Stephanie Ho, Stephanie Chen, and Rachel Velasco
Sam Dorsey, Nikki Havey, Crystal Pereira, and Page Silva
Table A- A lesson on scientific Notation.
What is scientific Notation?It is a way to express really big or really small numbers.
it allows us to compare numbers without losing track of all the zeros.
how to write Scientific notation.
the base is a number with only one digit in front of the decimal. [example] 5.3
then times the base by a power of 10.
[example] 5.3 x 10^3
from standard form to scientific notation.
place the decimal point so that only a one non-zero number to the left of the decimal.
then count the number of spaces the decimal point "moved" from its original position. this becomes
the exponent of 10
[example] 5300 = 5.3 x 10^3
from scientific to standard
move the decimal point to the right for positive exponents of 10
move to the left for the negative exponents of 10
[example] 5.3 x 10^3 = 5300
[example2] 5.3 x 10^-3 = 0.0053
Table D
Dimensional Analysis
Purpose: Dimensional analysis is a way to analyze and solve problems using the units of the measurement.
Helpful Hint: Anything you measure in dimensional analysis will have some “unit of measure.” The measures could be miles, pounds, grams, or seconds.
Examples:
1.
2. How many seconds are in a minute?
60 secs= 1 min
60 min=1 hour
32 secs| 1 minute| 1 hour
| 60 sec | 60 minutes
Practice Problems:
Useful conversions: http://moodle.moreaucatholic.org/moodle19/mod/resource/view.php?inpopup=true&id=3861
Table E Study Guide in the Discussion Tab
SI Units
Distance: Meters = M
Mass: Kilogram = Kg
Time: Seconds = S
Temperature: Kelvin = K
Amount of Substance: Mole = Mol
Celcius to Kelvin: Celcius + 273.15
Kelvin to Celcius: Kelvin - 213.15 ( I think it is Kelvin to Celcius: Kelvin - 273.15 .)( Mazda)
1 L= 1000 mL
1Kg= 1000 g
10mm= 1cm
1 deciLiter= 0.1 L
Table B
Multiplication And Division
-- The number of significant figures in the result needs to be equal to the number of significant figures in the number with the fewest significant digits
Addition and Subtraction
-- The number of places after the decimal point in the result needs to be equal to the smallest number of decimal places in the original measurements
Accuracy and Precision
Sig Fig Rules
- All non-zero digits are significant- 523g = 3 sig figs
- 6,427,473 = 7 sig figs
- 0's in between #'s are significant- 5042 = 4 sig figs
- 2,048,001 = 7 sig figs.
- 0's at the beginning of the #'s are NOT significant- 0.0032 = 2 sig figs
- 0.000000372 = 3 sig figs.
- 0's at the end of some numbers are sometime significant. If there is a decimal point all 0's at the end of the #'s are significant.- 0.00000420 = 3 sig figs.
- 2.000 = 1 sig fig.
- If there is NO decimal point 0's at the end are NOT significant.- 70000 = 1 sig fig.
- 0's between the decimal point and the #'s are NOT significantMetric Units
1L=1000 mL1Kg=1000 g
10mm=1 cm
1dL=0.1 L
16oz=1 lb
1oz= 28.35g
1in=2.54 cm
1 mile= 1.61 km
2000lbs= 1 ton
1cm3= 1mL
1 gallon= 4 quarts
1 kg = 2.2 lbs
1 L = 1.06 qts
1 ft = 12 in
1 mile = 2760 yds
Vocabulary:
1) Measurement - A quantity that has both a number and a unit
2) Scientific Notation - A given number written as a product of a coefficient and 10 raised to a power
3) Accuracy - Measure of how close a measurement comes to the actual or true value of whatever is measured
4) Precision - Measure of how close a series of measurements are to one another
5) Accepted Value - The correct value based on reliable references
6) Experimental Value - Value measured in a lab
7) Error - Difference between experimental value and accepted value
8) Percent Error - The absolute value of the error divided by the accepted value multiplied by 100%
9) Significant Figures - A measurement including all of the digits that are known plus the last digit that is estimated
10) International System of Units - A revised version of the metric system
11) Meter - SI basic unit of length
12) Liter - A non-SI unit of volume
13) Kilogram - SI unit of mass
14) Weight - A force that measures the pull on a given mass by gravity
15) Temperature - A measure of how cold/hot an object is
16) Celsius Scale - Sets the freezing point of water at 0 degree Celsius, and the boiling point of water at 100 degrees Celsius
17) Kelvin Scale - Sets the freezing point of water at 273.15 Kelvins, and the boiling point of water at 373.15 Kelvins
18) Absolute Zero - Equal to -273.15 degrees Celsius
19) Energy - Capacity to do work or to produce heat
20) Calorie - Quantity of heat that raises the temperature of 1 gram of pure water by 1 degree Celsius
21) Conversion Factor - A ratio of equivalent measurements
22) Dimensional Analysis - A way to analyze and solve problems using units, dimensions, or measurements